Book excerpt: This interdisciplinary volume explores the ways in which time is staged at the threshold between the Middle Ages and the early modern period. Proceeding from the reality that all cultural forms are inherently and inescapably temporal, it seeks to discover the significance of time in mediations and communications of all kinds. By showing how time is displayed in diverse cultural strategies and situations, the essays of this volume show how time is intrinsic to the very concept of tradition. In exploring a variety of medial forms and communicative practices, they also reveal that while the beginning of the age of printing (around 1500) may mark a fundamental change in terms of reproduction and circulation, artefacts and other historical traditions continue to employ earlier systems and practices relating time and space. The volume features articles by leading researchers in their respective fields, including studies on mosaics as a medium reflecting space and time; the triptych's potential as a time machine; winged altarpieces mediating eternity; texts and images of the passion of Christ permeating past, present, and future; dimensions of time embedded in maps; a compendium of world knowledge organized by forms of time and temporality; the figuration of prophecy in times of crisis; the portrayal of time in architecture. The volume thus provides a new approach to media and mediality from the perspective of cultural history.